/* 银行卡号 */
export const newBit = (str) => {
    if (typeof str !== 'string') {
        str = str.toString();
    }
    let NewStr=""
    let arr=str.split("")
    for (let i = 0; i < arr.length; i++) {
      if(i%4==0){
        NewStr=NewStr+" "+arr[i]
      }else{
        NewStr=NewStr+arr[i]
      }
    }
    return NewStr
  }
  